WO2005043675A1

WO2005043675A1 - Antenna assembly, in particular for radar applications in motor vehicles

Info

Publication number: WO2005043675A1
Application number: PCT/EP2004/052129
Authority: WO
Inventors: Ewald Schmidt; Klaus Voiglaender
Original assignee: Robert Bosch Gmbh
Priority date: 2003-10-27
Filing date: 2004-09-10
Publication date: 2005-05-12
Also published as: JP4217713B2; DE10350034A1; JP2006514809A; EP1700357A1; CN1875519A; US20070216587A1; US7696938B2

Abstract

The invention relates to an antenna assembly comprising an antenna supply substrate (1) with conductor structures, said substrate being connected to planar antenna beam elements (2) by means of field coupling. A retaining part (3) that can be fixed onto the antenna supply substrate (1) is provided for the antenna beam elements (2). Said retaining part (3), or a housing part (5) acts as an HF shield for the antenna supply substrate (1). The retaining part (3) and/or housing part (5) is/are structured in such a way that waves are guided away from the planar antenna beam elements (2), when viewed from the emission direction.

Description

Antenna arrangement, in particular for radar applications in motor vehicles

State of the art

Various planar antenna arrangements are known as antenna beam elements with one or more conductive radiating surfaces (single patch or patch array) on dielectric substrate materials (patch antennas, microstrip antennas). These patches are either fed directly via contacted lines, e.g. at the edge of microstrip lines or through the substrate via vias in the patch area or within the multilayer substrate with a suitable layout via field coupling. There is an application to achieve a narrower antenna beam characteristic; additional elements such as "Superstrat" (planar dielectric plate at a certain distance from the patches) or "Polyrod".

As a mechanical protection against the environment (rain, snow, dirt, stone chips, ...) the antennas are covered with a radome. In special cases, the function of the Superstrat is integrated into the radome through suitable geometry and choice of material.

Also known are the complementary arrangements in which the patches are metal-free in the layout and the environment is conductive.

Advantages of the invention

With the measures of claim 1, ie with an antenna feed substrate, with conductor structures for field coupling to one or more planar antenna beam elements, one fixable against the antenna feed substrate Receiving part for the planar antenna beam element (s), the receiving part itself or a housing part, which can be connected to it in a form-fitting manner in particular, is provided for HF shielding of the antenna feed substrate, and the receiving part and / or the housing part is / are structured in such a way that it is planar Antenna beam element (s) from which, as seen in the direction of radiation, an antenna guidance is achieved, an antenna arrangement can be achieved which is inexpensive, ensures favorable decoupling, absorbs manufacturing tolerances, has low losses and has a large bandwidth. The assembly effort of the overall system into which the antenna system is integrated can be minimized with the measures of the invention.

Advantageous further developments are shown in the subclaims.

In the housing part, webs can be integrated in a simple manner, which are suitable for forming HF chambers over the antenna feed substrate. This serves to decouple the planar antenna beam elements (patches) or their signal supply and other RF circuits on the same substrate.

The planar antenna beam element (s) can be applied to one or both sides of a dielectric substrate. A single installation of the antenna beam elements is therefore not necessary. The substrate or the individual antenna beam elements can advantageously be introduced into openings in the receiving part, so that a defined distance from the antenna feed substrate is ensured even with manufacturing tolerances. The breakthroughs can also advantageously be used to form complementary planar antenna beam elements (slot radiators). The field coupling between the antenna feed substrate and the beam elements can be optimized if the distance is chosen to be less than a quarter of the operating wavelength, preferably 0.02 to approximately 0.1 of the operating wavelength. If the housing part is provided with at least one recess in the direction of the antenna feed substrate, the base of which is preferably planar, the antenna beam elements or the dielectric substrate can be easily mounted and fixed. Will the transition from

If the base / end of the recess on the outside of the muffled part is hom or funnel-shaped, an optimal wave guide for the radiation and an optimal wave resistance transformation from the radiation element to the free space can be achieved. A particularly metallic receiving part itself or a housing part can have a cover made of dielectric material, which is shaped and dimensioned such that it can serve as a radome or superstrate. This outer cover can have lugs in the area of the recesses which engage in the recesses in a form-fitting manner or in the case of complementary planar antenna beam elements

(Slot radiator) penetrate the latter. This measure leads to a reduced volume or overall length compared to conventional patch antennas, which is of particular advantage in the field of bumper vehicles.

If the receiving part consists of a dielectric material, it can be shaped and dimensioned such that it can itself serve as a radome or superstrate.

The planar antenna beam element (s) can be embedded or injected into the dielectric receiving part. As an alternative to this, the planar antenna beam element (s) can be embedded in a dielectric funcional part which can be inserted in a form-fitting manner in the receiving part and / or the housing part, in particular in its recess.

The receiving part can be equipped with locking elements for inserting and fixing the antenna beam elements. This makes assembly easier and that

Replacement of antenna beam elements.

Desired antenna lobes can be set or undesired side lobes suppressed by different numbers of antenna beam elements compared to associated coupling slots in the antenna feed substrate and different distances.

A stack arrangement (stacking), i.e. Attaching several antenna beam elements one above the other can be easily implemented by storing them in the dielectric functional part or the radome.

The radiation lobes can also be optimized for desired antenna applications by inclining the surface normals of at least two antenna beam elements or inverse planar antenna beam elements to one another. It is also possible to combine normal planar antenna beam elements (metallic plates) with inverse planar radiation elements (slot radiators), in each case one type of planar antenna beam element being accommodated in a different structure (receiving part, cover). A variation in the number and the distance can also be provided here.

drawings

Exemplary embodiments of the invention are explained in more detail with reference to the drawings. Show it

1 shows a section through an antenna arrangement with patches in a dielectric

Receiving part,

2 shows a section through an antenna arrangement with patches in a dielectric

Functional part, Figure 3 is an exploded view of an antenna arrangement from above,

FIG. 4 shows an exploded view of an antenna arrangement from below,

5 shows an antenna arrangement with injected or clipped into the radome

patches,

6 to 9 an antenna arrangement with patches in a substrate for external mounting, FIGS. 10 to 14 an antenna arrangement with patches in a substrate for

Interior installation,

15 to 17 an antenna arrangement with inverse patches,

18 to 19 show an antenna arrangement with dielectric filling of the inverse patches,

20 to 22 an antenna arrangement with additional stack patches in the radome, FIGS. 23 to 25 an antenna arrangement with patches arranged in the center

Coupling slots,

Figures 26 to 28 an antenna arrangement with different distances between

Coupling slots on the one hand and patches on the other hand,

29 to 31 show an antenna arrangement with different distances between the coupling slots and between the patches,

FIGS. 32 to 34 an antenna arrangement with patches inclined with respect to the planes of symmetry,

35 to 37 an antenna arrangement with mutually inclined inverse patches and normal patches in the radome. Description of execution examples

The invention is based on known planar metallic antenna beam elements (patches) which are insulated from one another and are positioned at a defined distance above an antenna feed substrate and are fed in a field-coupled manner. The

Intermediate space either consist of air, the antenna beam elements being held mechanically outside the patch area, or of a plastic with a low dielectric constant (close to 1), which can be foamed.

Figure 1 shows a first embodiment of an antenna arrangement according to the invention

Cut. An antenna feed substrate 1 is provided with suitable conductor structures for field coupling via air to one or more planar metallic patches (antenna beam elements) 2 arranged above it. The patches 2 are provided in a receiving part 3, which consists of plastic. The distance between the feed substrate 1 and a patch 2 is chosen to be less than a quarter of the operating wavelength, preferably 0.02 to approximately 0.1 of the operating wavelength. The patches 2 are preferably injected captively at the same time as the plastic part 3 is being injection molded. Either in such a way that the metal plates are completely encapsulated, or in such a way that they are only partially surrounded by plastic at the top, bottom or at the edge. The thickness of the leaflets have at least such a thickness as for the production of the

Composite plastic / metal is necessary. The stacking of patches is also easy to manufacture, preferably with two patches lying one above the other at a distance of up to approx. 1/10 of the wavelength of the medium in between. The stacked patches can have the same or different sizes and geometries. In Figure 1, a housing part 5 is provided, which between the antenna feed substrate 1 and the

Recording part 3 is located. In the area of a patch 2, the housing part 5 has a recess 6, into which the receiving part 3 with the patch 2 projects. In this embodiment variant, the end of the recess 6 is open - thus represents an antenna breakthrough - in order to achieve the field coupling between patch 2 and antenna feed substrate 1. The transition of the recess 6 from the end to

The outside of the housing part 5 is configured in a hom or funnel shape in order to achieve a targeted wave guidance in the radiation direction and at the same time an optimal wave resistance transformation from the patch 2 to the free space. The housing part 5 is designed to be conductive, for example made of aluminum pressure or metallized Plastic injection. It can thus serve as an RF shield for the antenna feed substrate 1 underneath.

To better decouple the signal feed to the individual patches 2, the housing part 5 is provided with webs 7. This creates over the guiding structures of the

Antenna feed substrate 1 RF chambers that prevent signal crosstalk to an arrangement in a neighboring chamber. A housing base 8 is located under the antenna feed substrate 1. The receiving part 3 and the housing base 8 are positively connected to the housing part 5, for example by screws, clamps, gluing, etc. The Aufiiahmeteil 3 has a corresponding geometry for receiving the

Antenna feed substrate and the receiving part 3. In the case of an asymmetrical plastic patch part, the top or bottom side can face the antenna feed substrate 1. The housing is designed in such a way that the distance between the antenna feed substrate 1 and patch 2 is defined over the entire circumference of the receiving part 3. With a correspondingly dense design, the plastic cable can simultaneously

Take over the function of the radome so that an additional cover is not required.

Alternatively, the conductive housing part 5 is not a receptacle for the complete antenna feed substrate, but is in turn only partially positioned on the antenna feed substrate 1. In this case, another part is called

Housing necessary.

In the embodiment according to Figure 2, the patches are in an additional functional part 4, e.g. made of plastic, stored / injected, which is inserted in a form-fitting manner in the housing part 5, in particular in its funnel-shaped or horn-shaped recess 6. The

Receiving part 3 covers this functional part 4 and forms a unit with it. It can also serve as a radome. The receiving part preferably has a groove 8 into which the functional part 4 can be pressed or glued. Figure 3 shows the two alternatives of Figures 1 and 2 in a perspective view from above and Figure 4 from below, the alternative of Figure 1 on the left and the alternative of Figure 2 is shown in a common unit on the right. This common unit with the two alternatives is advantageous, for example, if one alternative serves as a transmitting antenna and the other alternative as a receiving antenna. The alternatives can then be optimized, for example, precisely to the desired different antenna characteristics, for example narrow transmission characteristics and broad reception characteristics or vice versa. FIG. 5 shows an alternative to storing the patches 2 in the receiving part 3. The receiving part 3 has on its underside latching elements 19, for inserting and fixing the antenna beam elements (patches) 2. These latching elements 19 protrude with the patches 2 through the antenna openings of the housing part 5 and are fixed on the housing part after fixing the antenna feed substrate 1 and the receiving part 3 5 captively positioned over the antenna feed substrate 1.

Figure 6a shows a perspective top view and Figure 6b shows a bottom view of an embodiment in which the antenna beam elements, here three patches in one

Column, are applied to a dielectric circuit board substrate 9 on one or both sides of the substrate. If patches 2 are applied on both sides, they can also have different geometries (patch 0 and patch U). The antenna feed substrate 1 is, as before, at a distance of 0.02 to approximately 0.1 of the operating wavelength from the patches 2. The receiving part 3 for the dielectric substrate

9 with the patches 2 is conductive as in the previous exemplary embodiments, e.g. made of AL pressure or metallized plastic injection molding.

The receiving part 3 itself serves here as a housing part, as can also be the case with other design variants, and is pot-shaped with an upper cover side 10 and a housing frame 11. The receiving part 3 points in the area of the substrate 9 in the direction of the antenna feed substrate 1 , a recess 6, the end of this recess passing into a breakthrough for the field coupling of the antenna feed substrate 1 to the substrate 9 or its patches 2. The transition from the end / bottom of the recess 6 to the cover side 10 is funnel-shaped or homeshaped for wave guidance in the beam direction. In the embodiment of Figure 6, the substrate 9 is mounted from the outside, i.e. introduced into the recess 6 up to its planar base and fixed there before it passes into the opening. In order to form RF chambers for shielding the antenna feed substrate 1, the receiving part 3 has webs 7, each of which for example

Housing frame 11 extend to the recess 6. The patch side of the substrate 9 is used in a defined manner facing or facing away from the antenna feed substrate 1, facing in FIG. 6. With a correspondingly dense design, the substrate 9 can also take on the function of the radome at the same time, so that an additional cover is not required. Alternatively, the conductive receiving part 3 is not the complete recording Antenna conductor substrate 1, but is in turn applied only partially positioned on the antenna feed substrate 1. In this case, another part is required as a housing.

Figures 7, 8 and 9 show in a top view and in section the external assembly in detail. The substrate 9 with the patches 2 is placed at the end of the recess 6 on a bead 12 which holds it at a defined distance from the antenna feed substrate 1. 10 to 14, the substrate 9 is fixed from below against the stop 13 of the receiving part 3 in the region of the recess 6, so that it also has a defined distance from the antenna feed substrate 1 in this embodiment.

A complementary (inverse) planar antenna structure is described below, which, in comparison to complementary patch antennas with an air gap, does not require a special part with the inverse structures, since these are integrated into an already existing part. This leads to a cost reduction due to fewer parts and less tolerance variation (extra parts that are not available also have no tolerance). According to FIGS. 15 to 17, the antenna arrangement with complementary structures consists of an antenna feed substrate 1 with suitable semiconductor structures for field coupling via air to form one or more complementary patches. The distance of the patches from that

Antenna feed substrate 1 is less than a quarter of the operating wavelength. Practical values are 0.02 to approx. 0.1 of the wavelength. Furthermore, a conductive housing / receiving part 3 with a corresponding geometry is provided for receiving the antenna feed substrate 1. Corresponding patch openings 14 are provided in the dining area above the substrate 1 in the continuation of the beam path, which act as slot radiators. The openings 14 have known patch shapes, such as the rectangular shape shown. With patch arrays, each feed can be chambered below the patches as previously implemented via the webs 7. This chamber geometry is chosen so that there are very good adaptations for the antenna at the operating frequencies. The antenna feed substrate 1 is attached to the housing by the methods described above, such as screwing, gluing, clamping ...

Variants and extensions are described below: The existing cover / cover 15 of the arrangement made of a suitable dielectric material, for example plastic or ceramic, is shaped in this way in the antenna area and dimensioned that radome properties are guaranteed. The special shape is preferably directed into the housing. This results in the smallest possible volume for the device. This is possible because chambers for HF circuits locally need a certain height next to the antennas, which is then available to the antennas themselves as usable volume in the antenna area. The existing one

Cover / lid 15 of the arrangement made of a suitable dielectric material, e.g. Plastic or ceramic is shaped and dimensioned in the antenna area so that radio properties are guaranteed. The special shape is preferably directed into the housing. This results in the smallest possible volume for the device. This is possible because chambers for RF circuits locally need a certain height next to the antennas, which is then available in the antenna area of the antennas itself as a usable volume. The existing cover / lid 15 of the arrangement made of a suitable dielectric material, e.g. Plastic or ceramic is in the antenna area inside the device, i.e. formed in the recesses 6, i.e. has at least one approach 51 (Figures 18 and 19) that the airspace up to the

Patch outer surface is sufficient, or even protrudes through the patch opening. Further improved antenna properties can be achieved with little additional effort. Stacked (stacked) patch antennas can be easily realized in combination with the inverse patch arrangements mentioned above and the metal patch attachment described above (injecting slack patches 21 into the lid 15 or liping)

(Figures 20 to 22). The dimensions and shapes of the stacked patches can be the same or different.

The openings 6 in the receiving / housing part 3 can again have known funnel or horn antenna shapes in the further course of the antenna axis.

Alternatively, the conductive housing is not accommodated for the entire conductor substrate, but is itself only partially positioned on the substrate. In this case, another part is required as a housing.

In a further embodiment variant, an arrangement of N welding structures on the surface of the ceramic, alternatively printed circuit board or multilayer composite materials, is to be provided, which feed an array of M patches which are fastened to a cover housing. For example, four patch metal platelets are arranged at a constant height in the middle above the four coupling slots in LTCC substrate or organic multilayer substrate. The first advantage is that a tight coupling network can be created on a planar substrate that feeds an arrangement of spatially distant structures that have a larger aperture.

Through targeted use of an odd arrangement of feed elements with a larger odd number of patches, the desired directional characteristic can be represented with a wider lobe and a maximum perpendicular to the surface if no phase shift between the element currents is set. An arrangement with an even number of food elements and a larger even number of patches leads to an even wider club, but with a slight minimum in the vertical direction to the surface. If you select this indentation to a maximum of 3 dB, the opening angle can be widened by up to 20% compared to the last solution.

You can target by arranging even / odd or odd / even

Number of food elements / patches improve side lobe suppression.

So far, a constant distance between the patches and coupling elements (coupling slots) has always been assumed. However, this can also be selected symmetrically increasing or decreasing, each separately for food elements or patches. So that

Coupling factors are set finer and additional directional diagram properties such as improved side lobe suppression or beam broadening can be achieved by small indents.

A predefined performance distribution (tapering) can also be applied to the

Reach food elements and patches by changing the coupling coefficients.

If mechanical reasons or manufacturing reasons speak for it, coupling networks can be packed tightly and fewer patches can be used (N> M); Example too large patches in the radome fed by small structured slots.

FIGS. 23 to 25 show an arrangement with four patches arranged in the middle via corresponding coupling slots 22 on the antenna feed substrate 1. In the variant according to FIGS. 26 to 28, M patches 2 are arranged over N coupling slots 22, with equal distances between the coupling slots and others or equal distances are adhered to in patches 2. In the variant shown, N = 5 equidistant patches 2 in the radome via M = 4 equidistant coupling slots 22 on the antenna feed substrate 1 are shown. With an increased number of transmit patches 2, dimensionally longer antennas with a greater range are obtained, which is otherwise not possible simply because of the substrate size, or the substrate size can be chosen to be smaller than usual. In the variant according to FIGS. 29 to 31, the distances, separately for coupling slots 22 and patches 2, are set to change or change symmetrically outwards compared to the first variant. M and N are natural numbers, preferably M> N.

In the exemplary embodiments presented so far, e.g. four patches 2 each at a constant height above the coupling slots 22 of the antenna feed substrate 1 (LTCC circuit or organic multilayer substrate) and feeding with the same power and phase can result in an unnecessarily high secondary lobe radiation and a less than optimal antenna pattern. This disadvantage can be suppressed if at least two planar antenna beam elements 2 and / or inverse planar antenna beam elements are inclined with respect to one another with respect to their surface normals. FIGS. 32 and 33 show a variant in this regard with, for example, 3 complementary (inverse) patches 2 (slot radiators) which are inclined inwards. For this purpose, the base of the arch 6 of the receiving part 3 is divided into three mutually inclined surfaces, in each of which slots are provided. Due to the different coupling coefficients, due to different heights in the Z direction, higher side lobe suppression can be generated. For a wide club, on the other hand, the patches 2 can be tilted divergent outwards. A rotation of the surface normal around the Y axis moves a beam swivel away from the normal. The rotation can also be different for the individual patches 2. The top cover 23 serves as a radome and has no electrical function.

In order to increase the bandwidth and to utilize a larger aperture (higher antenna gain), it is advantageous to give the radome 23 an electrical focusing, similar to known dielectric lenses. The effect is enhanced if additional electrical radiator structures are attached to the radome. It can be done by injecting, pressing in or galvanizing. If more patches such as coupling slots are applied to the radome, a feed circuit that is small in size can illuminate a much larger area (cf. the design variants according to FIGS. 29 to 31). The additional advantages as described above, e.g. taking advantage of an odd-numbered arrangement of food elements with a larger odd-numbered patch and the distance variation in Z-

Direction can also be reached. In addition, the patches can also be tilted about the Y-axis for str-d-coupling. A jagged or stepped form of the radome can also be represented. A continuous contour is often required for manufacturing reasons. Tapering can also be provided. Arrangements such as uneven spacing of the coupling slots, uneven spacing of the patches,

Arrangement of several columns with elements optimized in themselves on continuous or jagged contours, as well as N feed elements with M coupling slots and the fact of a tilted radome arrangement can of course also be represented individually or in combination of these in the sense of this invention.

Some of the previously shown variants are explained below with the aid of drawings.

FIGS. 32, 33 and 34 show an arrangement with inverse patches 2, in which the surface normals are turned inwards. It goes without saying that arrangements turned outward can also be represented. The highs can also contain positive or negative levels. In order to set a certain preferred direction, the inverse patches can also be rotated about the Y axis (FIG. 34, top left). The representation is based on a column with 3, 4 or 5 patches, but patch arrays can also be constructed with a number of columns different from 1, e.g. 6x4 elements with a continuous inner curved surface. In addition to the inverse patches, further normal patches 2 are held in the radome material in addition to the inverse patches in addition to the previous one. This leads to a broadband antenna arrangement. In addition, the number of slots (inverse patches) and normal patches are different.

As before, the M patches are now fed through N coupling slots on a flat HF-suitable printed circuit board made of, for example, organic material or ceramic material such as LTCC (antenna feed substrate 1). The Z distances of patches 2 increase symmetrically towards the outside. The patches can also sit on a jagged edge curve and be tilted in the X and / or Y direction. Of course the arrangement can also be carried out in several different columns. Depending on the desired beam shaping, the z distances can also decrease symmetrically outwards. Continuous contours are often preferred for manufacturing reasons.

Possible applications for the exemplary embodiments presented above are preferably found in motor vehicle technology such as radar distance measurement, ACC (Automatic Cruise Control), parking aids, vehicle-to-vehicle communication, tire pressure transmission, engine data transmission. Use in power tools, e.g. for the detection of lines is also possible. Usage is usually limited to frequencies above 1 GHz.

Claims

claims

1. Antenna arrangement, in particular for radar applications in motor vehicles, comprising: an antenna feed substrate (1) with conductor structures for field coupling to one or more planar antenna beam element (s) (2), a receptacle part (3) that can be fixed against the antenna feed substrate (1) for the planar one or more / n Antenna beam element (s) (2), the receiving part (3) itself or a housing part (5), which can be connected in particular with a form fit, for HF shielding the antenna feed substrate (1) and the receiving part (3) and / or the housing part is / are structured in such a way that wave guidance is seen from the planar antenna beam element (s) in the radiation direction.

2. Antenna arrangement according to claim 1, characterized in that the housing part (5) in the direction of the antenna feed substrate (1) has webs (7) for the formation of RF chambers above the antenna feed substrate (1).

3. Antenna arrangement according to one of claims 1 or 2, characterized in that the / the planar / n antenna beam element (s) (2) on a dielectric substrate (9) is / are applied on one or both sides.

4. Antenna arrangement according to one of claims 1 to 3, characterized in that the housing part (5) has at least one opening (14) for introducing the planar antenna beam elements (2) or the dielectric substrate (9) if the antenna beam element (s) e (2) is / are applied to the latter or for Formation of at least one complementary planar antenna beam element, an opening (14) forming a slot radiator.

5. Antenna arrangement according to one of claims 1 to 4, characterized in that the distance between the antenna feed substrate (1) and the planar antenna beam elements (2) or the dielectric substrate (9) to which they are applied is less than a quarter of the operating wavelength, preferably 0.02 to about 0.1 of the operating wavelength.

6. Antenna arrangement according to one of claims 1 to 5, characterized in that the housing part (5) in the region of the antenna beam elements (2) in the direction of the antenna feed substrate (1) to at least one recess (6) and the transition from the bottom / end the recess (6) to the outside of the housing part (5) is horn-shaped or funnel-shaped.

7. Antenna arrangement according to one of claims 1 to 6, characterized in that the receiving part (3) itself forms the housing part (5).

8. Antenna arrangement according to one of claims 1 to 6, characterized in that the receiving part (3) or the housing part (5) has an outer cover made of a dielectric material which is shaped and dimensioned so that it can serve as a radome or superstrate ,

9. Antenna arrangement according to claim 8, characterized in that the outer cover (16) in the region of an opening (14) has at least one extension (15) which engages in a form-fitting manner in the recess (6).

10. Antenna arrangement according to claim 9, characterized in that in the case of complementary (inverse) planar antenna beam elements, the approaches (15) project through the openings (6).

11. Antenna arrangement according to claim 10, characterized in that the planar / n antenna beam element (s) (2) is / are in particular injected into the dielectric receiving part (3).

12. Antenna arrangement according to one of claims 1 to 7, characterized in that the / the planar / n antenna beam element (s) (2) are embedded in a dielectric functional part (4), which in particular form-fitting in the receiving part (3) or Additional part (5) can be used, in particular in its recess (6).

13. Antenna arrangement according to one of claims 1 to 10, characterized in that the receiving part (3) has latching elements (19) for introducing and fixing the antenna beam elements (2).

14. Antenna arrangement according to one of claims 1 to 13, characterized in that M antenna beam elements (2) are provided and N associated coupling slots (22) in the antenna feed substrate (1) for field coupling, where M and N are natural numbers and M is preferably greater than N is.

15. Antenna arrangement according spoke 14, characterized in that different distances between the coupling slots (22) and / or the antenna beam elements (2) are provided.

16. Antenna arrangement according to one of claims 1 to 15, characterized in that at least two antenna beam elements (2) are provided stacked / stacked one above the other, wherein at least one of the antenna beam elements (2) is in particular embedded in the dielectric functional part (4) or the radome.

17. Antenna arrangement according to one of claims 1 to 16, characterized in that at least two planar antenna beam elements (2) and / or inverse planar antenna beam elements are inclined with respect to one another with respect to their surface normals.

18. Antenna arrangement according to one of claims 1 to 17, characterized in that both planar antenna beam elements and inverse planar antenna beam elements are provided, in particular the inverse planar antenna beam elements (2) being inclined with respect to one another with respect to their surface normals.

19. Antenna arrangement according to claim 18, characterized in that the number of planar antenna beam elements (2) is different from the number of inverse planar antenna beam elements.

20. Antenna arrangement according spoke 18 or 19, characterized in that the inverse planar antenna beam elements are arranged in the receiving part (3) and the planar antenna beam elements in the cover (15).